Ashley Cooper / Lettuce crop harvest in a field near Sorbas, Southern Spain. May.

Cheryl-Samantha Owen / Woman weeding in a field of Green beans (Phaseolus vulgaris) on commercial farm. The woman wears traditional clothing, a 'kitenge', wrapped around her. Tanzania, East Africa. December 2010.

Cheryl-Samantha Owen / Men cutting down the dried stalks of harvested baby Corn (Zea mays) for cattle fodder, irrigation system visible in the background. Commercial farm, Tanzania, East Africa. September 2011. Model releas...

Cheryl-Samantha Owen / Women weeding in a Green bean (Phaseolus vulgaris) field on a commercial farm. The women wear traditional clothing ('kangas' and 'kitenge'). Tanzania, East Africa. August 2011.

Cheryl-Samantha Owen / Woman weeding in a Green bean (Phaseolus vulgaris) field on a commercial farm. Tanzania, East Africa. August 2011.

Cheryl-Samantha Owen / Women weeding in a Green bean (Phaseolus vulgaris) field on a commercial farm. Tanzania, East Africa. August 2011.

Enrique Lopez-Tapia / Young fish seller carrying tray on head, Iemberem village. Cantanhez National Park, Guinea-Bissau, December 2013.

Bryan and Cherry Alexander / Mask of Grief, by Ernst Neizvestny, a monument to commemorate those who died in labour camps in Magadan Region. Eastern Siberia, Russia, 2006. Editorial use only.

David Woodfall / At work on Severn Estuary barge. Severn Estuary, England

Jane Burton / British show pony mare restless in first stages of labour, keeps lying down and getting up again, UK, sequence 4/26

Jane Burton / British show pony mare restless in first stages of labour, standing uncomfortably, UK, sequence 5/26

Constantinos Petrinos / Young boy and man working in rice field (child labour) Central Sulawesi, Indonesia 2000.

Doug Wechsler / Mules hawling sawn timber, Andes at 2500m, Zamora Chinchipe, Ecuador, South America

Nick Gordon / Manual workers at work in Bon Futuro open cast tin mine, Rondonia State, Brazil, Amazonia

Pete Oxford / Group of prisoners working at Lake Katwe Salt works, Queen Elizabeth National Park, Uganda. February, 2023. Saline water is evaporated from dug earthen ponds to produce rock salt and 'muddy&apo...

Pete Oxford / Two Tea pickers carrying baskets on back picking tea, Kibale, Uganda. February, 2023.

Pete Oxford / Woman working at Lake Katwe salt works, Queen Elizabeth National Park, Uganda. February, 2023. Saline water is evaporated from dug earthen ponds to produce rock salt and 'muddy' salt used fo...

Pete Oxford / Man working at Lake Katwe salt works, Queen Elizabeth National Park, Uganda. February, 2023. Saline water is evaporated from dug earthen ponds to produce rock salt and 'muddy' salt used for...

Pete Oxford / Woman working at Lake Katwe salt works, Queen Elizabeth National Park, Uganda. February, 2023. Saline water is evaporated from dug earthen ponds to produce rock salt and 'muddy' salt used fo...

Pete Oxford / People working at Lake Katwe salt works, Queen Elizabeth National Park, Uganda. February, 2023. Saline water is evaporated from dug earthen ponds to produce rock salt and 'muddy' salt used f...

Matthew Maran / Red Fox (Vulpes Vulpes) standing in front of Vote Labour sign on the London streets North London, England